Silicone Sealant

September 14, 2025Show 1799
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John: Okay we’re going to a sealant. We have a rotation, now we have a product. This is a silicone sealant from ASI. The ASI 502 Silicone Sealant 100% RTV turns out to be something that you can pretty much seal anything with. If you watch the TV ads with the guy with the black goo he puts on everything, like boats. But this is better.

Adam: Can you seal your muffler with it?

John: Yes, I think you can! It’s a new category of products called RTV’s, which stands for Room Temperature Vulcanization. Vulcanizing always was a high pressure, high temperature, sulfur related process that was intense. Room temperature vulcanization is kinda like room temperature fusion. You can’t do that. But you kinda can! And Mimi actually used this stuff. If you have a Blendtec blender, from the will-it-blend guys, they have this special mixing thing at the top, whatever you call that, the container, that has the knife blades in the bottom, those things are specifically designed and are expensive. They cost over $100 to get one replaced. Mimi, she had one leaking on her.

Adam: Oh, the whole blender is $600-$700.

John: The blenders are overpriced. But they do the job!

But Mimi used this RTV-stuff on the crack and it is safe for food usage. It’s got a special category. It’s safe once it vulcanizes and becomes solid. It’s a killer product, comes in a tube, you can find it on Amazon and elsewhere.

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